Godzilla: Tokyo S.O.S. (or Godzilla X Mothra X Mechagodzilla: Tokyo S.O.S. in Japan) is the epic conclusion of the Kiryu saga that began with Godzilla Against Mechagodzilla, working as an extended third act to that film.

After the success of bringing some classic kaiju into the Millennium series, what followed was the reintroduction of another of Godzilla's famous foes resulting in the very entertaining Godzilla Against Mechagodzilla (or Godzilla X Mechagodzilla in Japan).

After two half baked attempts at breathing new life into the series, Toho finally decided to break the mold, and delivered the incredibly energetic and creative Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack (that is a mouthful of a title isn't it?).